Improvement in clook-alakms



CHARLES H. WARNER, -oE NEW RAVEN, CONNECTICUT.

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IMPROVEMENT nv oLocE-ALARMS.

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To ALL WHOM 1T MAY CONCERN; i Y Be it known-that I, CHARLES H. WARNER,of New Haven, in the county of New Haven; and `State o f Connecticut,have invented a new Improvement in Clo'ck- Alarxns; and I- do herebydeclare the' follow`ing,-when takeufin connection with vthe accompanyingdrawings and the letters of reference marked thereon, -t o be a full,clean-and exact description of thesame, and which said drawingsconstitutepart of thisl specification, and represent, inl,- A l A IFigure 1, n. front vie'w, and iu v less, and 'commonly called eight-d ayelocks, and consists in the peculiar construction and arrangement of analarm-attachment, which, being wound up at the 'same time the clockitself is wound, -will automatically sound the alarm at a given hour,during the twenty-four hours ofthe day, and continue so to do, each day,during the time the clock is allowed to run. A Heretofore it has beennecessary to wind the alarm 'each day, and this must be done afterthetwelfth hout* from the time the alarm is given, inasmuch as'the alarmwould Abe sounded once every twelvejhourskwere the alarm wound up, andwhen once started, the alarm sounds until its power is exhausted. This,i'n eight-day clocks, is a great inconvenience, and, lfor analarm-clock, deprives it of any advantage over a common thirty hourclock. By my improvement all the vdiiiiculties existingn thearrangement, as `ordinarily produced, are entirely overcome. i

To enable others to construct my improvement, Iwill proceed todescribethe same, as'illustrated in 'the' accompanying drawings. i

This invention relates to an improvement in clockswhichare-constructedto run for Aeight days, more or A is,the front platecfa common eight-day-clock movement, and has fixed upon th'e 4hourhandshaft the'4 usual dal,B,'which isset, in the usual manner, to indicatethe time'the alarm is to be sounded, On the 'same spindle is a pinion,C, working into a wheel, D, twi'ce`the size of the pinion C, causing thesaid wheel D to make one revolution in each twenty-four hours, in thedirection denoted b'y the arrow.- On the shaft of 4the wheel islarranged a cam, F, (see iig. 2,) denotedbybroken lines, iig. 1,-uponwhich ,rests one cud' of a lever, G, the

other end being pivoted at H, and' from the lever Gr a rod, I, connectswith the alarm.

.It this arrangement be used for an alarm of ordinary construction, thealarm may be wound at' any time, but cannot be sounded until thetwenty-four hours have passed, so as to permit the lever Gto fall upontheicam,v as denoted in fig. 1, the position 4in the drawing being thatat theinstant the alarm is sounded, and, in red, as raised, and waitingthe revolution of the cam, so that the arm may fall oil` and sound thealarm. Below the movement, or at any convenient point for attachment tothelever G, I arrange the alarm-' movement, the said movement beingarranged between two plates, L L, in the usual manner ofclock-movements;

' The construction is as follows: Upon a shaft, n, I arrange a toothedwheel, M, and to the same shaft a spring, N, attached to the shaft orwheel, so that when the spring is wound up by the turning' of the shaft,and locked by a pawl, Zr, in the' usual manner, the action of the springN is, when free, to cause the revolution 'of the wheel M, -and thesnidwheel M-has fixed upon its side several pins, d, more or less in number,but arranged so las to leave one space larger than the others, as fromdl to d2, the object'of which will be lhereafter described.

'The Wheel M works into a pinion, l?, on a shaft, c, and on the saidshaft is arranged the striliingwheel R, (a

portion of which is broken away in iig. 1,) which operates, by its4revolution *through the hammer vS, 'solas to soundv the alarm upon thebell T, which may or may not be the same-bell upon which the hours arestruck. On the shaft c is-arranged a cam, U, which, at one point, has anotch, W, formed, and from a shaft, f, an arm, l, extends down, and itsend arranged so as to rest upon the cam U, and so that when the notchinthe cam is prea sented, the end will fall into the said notch, asdenoted in iig. 1; and from the same'shaft,f, an arm,-z, extendsforward, and lies so as to rest upon the pins oZ upon the wheel M, butso that when the space between thev pinsdf and d2 arrives beneath thearm 7L, then the hrm h falling thereinto, will'permit the end of thelever y to fall into the notchW in the cam U'; but when the lever g israised from the notch in the cam U, the said cam will" revolve by theaction of the spring thereon, through the wheel M, and the several pinson the wheel'M willhold` the arm h up, as denoted in red, andconsequently the lever g from the cam U, until the space on .the'wheel M

